Simulation of a quantum jump in three-level systems using photonic Gaussian modes

A. C. Cardoso, J. G. L. Condé, B. Marques, J. S. Cabral, and S. Pádua
Phys. Rev. A 103, 013722 – Published 21 January 2021

Abstract

Multilevel quantum systems lose coherence due to quantum jumps. One example is the spontaneous decay between the internal levels of an atom. In this work, we propose and implement a way to simulate experimentally a three-level system under a quantum jump using a three-mode photonic system. We simulated three different dynamics of spontaneous decay in a three-level atomic system: cascade decay, Λ decay, and V decay. With an attenuated light coherent source at photon level, we have prepared photons in a three-path superposition state, which was encoded in parallel Gaussian modes. By programming a spatial light modulator (SLM) for producing periodical phase modulation, we were able to implement the corresponding dynamical maps for quantum jumps in terms of the Kraus operator decomposition. Our results have verified experimentally the variation of the population levels and the decoherence effects caused by quantum jumps in the three decay configurations of the three-level system.

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  • Received 11 May 2020
  • Accepted 22 December 2020

DOI:https://doi.org/10.1103/PhysRevA.103.013722

©2021 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

A. C. Cardoso1, J. G. L. Condé1, B. Marques2, J. S. Cabral3, and S. Pádua1

  • 1Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Minas Gerais, Brazil
  • 2Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil
  • 3Instituto de Física, Universidade Federal de Uberlândia, 38400-902 Uberlândia, MG, Brazil

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Issue

Vol. 103, Iss. 1 — January 2021

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